此刻，通过使用JSON，我们只给客户发送了一些简单的字符串数据类型，现在给客户发送一个定制的类型。当给客户返回复杂的、定制的类型时，需要要让系统知道：我们打算向客户发送什么样的类型，因此我们要为Web Service增添另一个属性——GenerateScriptType(typeof(MyType))，这个属性位于System.Web.Script.Services命名空间。在进一步操作之前，我们先应该看一下Person Web Service代码后置的档案（代码4）。
代码4: PersonWebService.asmx后面的代码
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using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Web;
using System.Web.Configuration;
using System.Web.Script.Services;
using System.Web.Services;
using System.Web.Services.Protocols;
[WebService(Namespace = "http://gbarnett.org/services")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]
[GenerateScriptType(typeof(Person))]
public class PeopleWebService : System.Web.Services.WebService {
public static string _conn
= WebConfigurationManager.ConnectionStrings["CodeProjectConn"]
.ConnectionString;
public PeopleWebService() { }
[WebMethod(Description="Gets a list of all the People")]
public Person[] GetPeople() {
List personList = new List();
using (SqlConnection sqlConn = new SqlConnection(_conn))
using (SqlCommand sqlCmd
= new SqlCommand("SELECT PersonId, FirstName, LastName FROM People",
sqlConn)) {
sqlConn.Open();
SqlDataReader sqlRdr = sqlCmd.ExecuteReader();
while (sqlRdr.Read()) {
personList.Add(new Person((int)sqlRdr.GetInt32(0),
sqlRdr.GetString(1) as string,
sqlRdr.GetString(2) as string));
}
}
return personList.ToArray();
}
[WebMethod(Description = "Returns the time on the server")]
public string GetServerTime() {
return DateTime.Now.ToLongDateString() + ", " +
DateTime.Now.ToLongTimeString();
}
}
